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I am new to subs and have been learning about them since attending the Subex24 event. One of the subs that has attracted my interest is the 1/72 Moebius Skipjack. I see that R&R engineering has a conversion kit for it. However I’m a little bit confused about that dive system.. It appears not to be a static dive system but rather a dynamic system. To me that means it can only submerge if going forward and it would appear that it cannot be totally submerged because of an air hose that reaches through the sail. If this is an incorrect Understanding can someone please correct my understanding? If it is correct, is there a better alternative for converting the Skipjack to RC? Thank you in advance for any help that might be offered.
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Last edited by Timothy L; 10-11-2024, 05:06 PM. -
R&R cylinder is a Static system.
Tube is NOT a snorkel but a vacuum break to relieve negative pressure inside the ballast tank.
Operates similar to this https://youtu.be/RqnxuMlmhkA?si=Tek8LCcum06BjZ1N .
Instead of a restrictor or solenoid valve, R&R uses a simple float valve.
Last edited by redboat219; 10-11-2024, 09:02 PM.Make it simple, make strong, make it work! -
Redboat219 -
Thank you very much for your help and the videos. I am not 100% clear as to what use of a valve accomplishes. If, I am following the video correctly, the valve prevents water from re-entering the chamber while the snorkel tip is still underwater. Correct? Is the solenoid possibly just a bit more reliable than a float valve? And if that is correct and one does not know how to program Arduino circuits, where might one purchase the Arduino Control circuit and solenoid? And finally, Is there another system that might be better suited for the Skipjack Or should this system make a perfectly fine operating sub? Again thank you so much for your help.Last edited by Timothy L; 10-11-2024, 09:44 PM.Comment
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R&R is a good system.
If you want alternatives you could try getting in touch with Bob Martin.Last edited by redboat219; 10-12-2024, 02:59 AM.Make it simple, make strong, make it work!Comment
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This is Nate He's Skipjack with vented tank with servo operated switches/pinch valve.Make it simple, make strong, make it work!Comment
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3D printed conversion kit from Maximus modellbau
https://cults3d.com/en/3d-model/gadg...imus-modellbauMake it simple, make strong, make it work!Comment
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Redboat219 -
Your help has clarified things for me and is most appreciated. Thank you so much for helping !Comment
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The float valve partially (not fully) seals off the vent, consequently the pump is able to empty the tank faster then any additional water can enter, permitting the tank to be emptied whilst still submerged. Once above water the float will drop away exposing a full vent and allowing the tank to return to atmospheric pressure.
It's a simple system that's been around for decades.Comment
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Subculture -
Thank you for a very clear explanation. I’m learning bit by bit!Comment
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It does not appear that Skipjack dive systems use linkages to activate the dive planes on the sail - although I have seen it on other sub models. Are they not particularly useful on a Skipjack model? Thank you.Comment
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Ahhh…..I have just now located the Cabal report story et al behind the Skipjack. All is revealed. Thank you all for your input!Comment
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Having met He Who Shall Not Be Named at Subex24 I will submit to the hide beating LOL. I see, by the way, from these photos how the sail plane linkage is set up now.
So here is a question that will likely cause more of my hide to be shredded but what the heck, pain is pain: is the original conversion set of fittings and wtc gone forever or might someone lurking here have one that could be pried free? Otherwise the options seem to be R&R or making my own fittings etc and using a Bob Martin dive system. Again, my thanks.Comment
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